Design method, device, computer system and storage medium of air precooler with phase change

Abstract

The invention proposes a design method, device, computer system and storage medium for an air precooler with phase change, given the air inlet temperature, pressure and flow rate, and the coolant inlet temperature and pressure, given the air precooler with phase change The air temperature drop of the device; according to the air flow rate, air specific heat capacity and air temperature drop, the air transfer heat is obtained; the surface heat transfer coefficient of the air channel, the surface heat transfer system h of the coolant channel, and the average heat transfer coefficient of the two-phase coolant channel are determined , and then calculate the total heat transfer coefficient of the precooler; according to the average heat transfer temperature difference and heat transfer amount of the coolant before, during and after the phase change of the air precooler, calculate the cold and hot fluid of the air precooler Average temperature difference: According to the total heat transfer coefficient of the precooler and the average temperature difference between the hot and cold fluids, the effective heat exchange area is obtained to determine the final structure of the air precooler with phase change. The invention can maximize the heat exchange potential of the coolant.

Description

technical field [0001] The technical field of air precooler design of the present invention, in particular, relates to a design method, device, computer system and storage medium for an air precooler with phase change. Background technique [0002] For combined engine air and its deep pre-cooling technology, the low-resistance and high-efficiency heat transfer of the pre-cooler is an eternal topic. According to the heat transfer formula, as the effective heat transfer area increases, the heat transfer capacity of the precooler will increase accordingly, but this will result in an increase in engine mass. For the pre-cooling engine, although it has many advantages such as simple structure, how to achieve the required heat exchange efficiency within the range of the smallest mass increase is an urgent problem to be solved. In addition, for a supersonic strong precooling turbine engine, the precooler is the core component that can greatly cool down the high temperature incomin...

AI Technical Summary

Problems solved by technology

According to the heat transfer formula, as the effective heat transfer area increases, the heat transfer capacity of the precooler will increase accordingly, but this will result in an increase in engine mass

Images